Hi there...I can understand your concern. From your history it looks like you are suffering allergic rhinitis. The only cure for it to avoid the allergens. Medications will only subside it for a moment. So try to identify what could be exacerbating your symptoms like pilliow dust, house dust, pollens from the plants, etc. You can also get a skin prick test at any centre and take the reports to a ENT specialist for further evaluation.